Get premium membership and access revision papers, questions with answers as well as video lessons.

Engineering Science Question Paper

Engineering Science

Course:

Institution: Nyeri Technical Training Institute question papers

Exam Year:2012

Nyeri Technical Training Institute

End Of Term Examination

March :2012

Engineering Science

Time:1HR 30 MIN

INSTRUCTIONS

This paper contains THREE questions

Attempt ALL questions

Maximum marks for the questions are as indicated.

1(a) State the polygon of forces of theorem.

(b)Explain briefly how system of forces acting at a point and hence determine their magnitude and direction of the resultant forces.
(c)A tension spring has an unladen length of 80mm and extends 1mm for every 150 N of applied load.If the spring is extended from 100 mm to 160 mm ,calculate the work done.
(20 marks)
2.(a)Define the following terms;
(i) Mechanical advantage

(ii)Velocity ratio.

(iii)Efficiency.
(b)A hoist requires 10N to lift a load of 100 N and 15M to lift a load of 200 N.If the machine has a velocity of 40N.

Determine:
(i) The law of machine

(ii) The velocity ratio and efficiency when the load is 100N.

(iii) The limiting efficiency. (20 marks)

3 (a) Define :
(i) Velocity

(ii) Acceleration

(b) A force of 50 N acts on a body of mass 200 kg.Determine the acceleration on the body.
(c)A horizontal force 60 N moves a body at 2.5ms`2 .Calculate the power required.

(d)A vehicle accelerate from rest to a speed of 72 km/hr in 7.5 s.Its speed then remain constant for the next 15 s before the vehicle is brought to rest in a distance of 120m.

Draw the velocity time graph and determine:
(i) The acceleration of the vehicle

(ii) The total distance covered

(iii) The average velocity for the entire distance. (20 marks)

Engineering Science Question Paper

More Question Papers

Popular Exams